A simple, lightweight module to check if given string or number is a valid TCKN-Turkish National Identity. It checks the given value against the TCKN algorithm.
const isTCKN = require('istckn');
isTCKN('[valid tckn]'); // true
isTCKN([valid tckn]); // true
isTCKN('[invalid tckn]'); // false
isTCKN({}); // false